Blacksmith s twyer-ibon



1. sHuGE-RT.

Tuyere.

Patented May 9, 1839.

UNITED STATES PATENT OFFICE.

JOHN SHUGER'I, OF ELIZABETH, PENNSYLVANIA.

IBLACKSMITH S TWYER-IRON.

Specification of Letters Patent No. 1,149', dated December 21, 1838.

To all whom t may concern Be it known that I, JOHN SHUGERT, of theborough of Elizabeth, in the county of Allegheny, in the State ofPennsylvania, have invented an Improvement in the Mode of Making Twyeror Tew Irons Used in Blacksmiths Forges; and I do hereby declare thatthe following is a full and exact description thereof.

The improvement which I am about to describe is on the tew-iron forwhich I obtained Letters yPatent of the United States under date of thethirty-first day of March in the year 1836, in which the blast from thetew-iron entered the fire at an inclination, say of forty-tive degrees.This eleva-tion of the blast was found to produce beneficial results,but some inconvenience was experienced from the tendency of the coal torise, or, fly up, when the blast was given with considerable forcethrough a round nozzle; an inconvenience which is efl'ectually removedby my present improvement, which is productive also of other advantages.

In the accompanying drawing Figure 1, is a perspective view of mytew-iron, and Fig. 2, a longitudinal section of it. From the back end 1,where the pipe of the bellows enters, to thepoint 2, may be a tube,either square or round, about sixteen inches long, and about two and ahalf inches in diameter; from the point 2, the tube rises on an angle offorty-five degrees, or more, to the opening through which the wind isdischarged at 3. From the angle 2, to the opening 3, the tube changesits form, being flattened horizontally, and widened out laterally, sothat the wind entering the fire shall do so in a long and thin sheet;this aperture may vary in size according to the size and design of theforge; it may, for example, be

from two to four inches in length, and from three eighths of an inch toan inch in height. There may be one or more partitions along thisopening to divide the blast into thin sheets, which will serve also toprevent the falling of coals into the tube.

The plate marked 4, 5, is a guard plate, against and upon which the lireis made; it is so made as that its upper part 5, shall form an angle of90 degrees, or nearly so, with its front portion 4. This latter portionmay be about ten inches long, and live wide; the part 5, may be an inchwider; the aperture 3 may be about one fourth of an inch below the bend,or angle. This guard, or fender plate effectually defends the tube fromthe action of the fire.

The iron being thus prepared is to be set in the forge with the mouththree or four inches below its surface. The bellows pipe is to beinserted in the back end of the tube. The wall is to rise from the backedge of the guard, or fender plate, and the whole forge finished in theusual manner.

By widening the blast and decreasing its depth, in the manner described,I have already remarked that the tendency of the coal to rise up by astrong blast is obviated; and besides this the re spreads out to a lessdistance from the forge back, and is concentrated where it is mostneeded.

All that I claim as constituting my improvenient is-The oblong formgiven to the aperture 3, in combination with the elevated blast, for thepurpose, and in the manner set forth.

JOHN SHUGERT.

litnesses:

Trios P. JONES, FR. P. DIMHEL.

